Issues when baking super flat meshes (crystal shards)

[mooha]

I have weird bugs when baking normal maps for very flat objects like crystals - https://prnt.sc/f9bbxr
Low poly models are with smooth shading of course. Flat shading does not work either, got artifacts on edges.

So how can I bake meshes like this one properly?

High poly here - https://drive.google.com/open?id=0B7U-bm7yxNoCbEFtaFRzUHQ0NDQ

[Vincent Gault]

Hey, could you provide your log file please?
Log file procedure : https://support.allegorithmic.com/documentation/display/SPDOC/Exporting+the+log+file
Could you provide some screenshots of your issue to make sure we are on the same page?


Thx!